Homebrewing is pretty awesome. For your first couple of batches, just concentrate on your sanitation. As long as you do that right, minor mistakes here and there won't stop you from eventually making beer. Might not turn out exactly how you want it to at first, but it will still be beer.
Joy of Homebrewing is a good guide, but there is some out of date advice in there (by the authors own admission). Big one I can think of is transferring your beer to a secondary fermenter after a week or so in the primary. The fear was that leaving the beer sitting on the yeast for that long would impart off flavors in the beer. However advancements in the availability to higher quality yeast strains to homebrewers has eliminated that worry. Unless you are adding some sort of additional flavor and/or a dry hop that requires you to move the beer to a secondary (which you probably shouldn't be doing for your first beer) or brewing something that requires some prolonged aging, just leave the beer in the primary fermenter the entire time.
One other thing (and there are differing schools of thoughts on this, so this is just my opinion) is that I prefer using plastic bucket style fermenters rather than carboys. They are much easier to work with and much easier to clean.